Introducing Modular Diffusers - Composable Building Blocks for Diffusion Pipelines

Introducing Modular Diffusers - Composable Building Blocks for Diffusion Pipelines Introducing Modular Diffusers - Composable Building Blocks for Diffusion Pipelines Published March 5, 2026 Update on GitHub Upvote 55 YiYi Xu YiYiXu Alvaro Somoza OzzyGT Dhruv Nair dn6 Sayak Paul sayakpaul Modular Diffusers introduces a new way to build diffusion pipelines by composing reusable blocks. Instead of writing entire pipelines from scratch, you can mix and match blocks to create workflows tailored to your needs!

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• Introducing Modular Diffusers - Composable Building Blocks for Diffusion Pipelines Published March 5, 2026 Update on GitHub Upvote 55 YiYi Xu YiYiXu Alvaro Somoza OzzyGT Dhruv Nair dn6 Sayak Paul sayakpaul Modular Diffusers introduces a new way to build diffusion pipelines by composing reusable blocks.
• Instead of writing entire pipelines from scratch, you can mix and match blocks to create workflows tailored to your needs!
• This complements the existing DiffusionPipeline class with a more flexible, composable alternative.
• In this post, we'll walk through how Modular Diffusers works — from the familiar API to run a modular pipeline, to building fully custom blocks and composing them into your own workflow.
• We'll also show how it integrates with Mellon, a node-based visual workflow interface that you can use to wire Modular Diffusers blocks together.
• Sub-Blocks: [0] text_encoder (Flux2KleinTextEncoderStep) [1] vae_encoder (Flux2KleinAutoVaeEncoderStep) [2] denoise (Flux2KleinCoreDenoiseStep) [3] decode (Flux2DecodeStep) ) Each block is self-contained with its own inputs and outputs.